Alain Robbe-Grillet:

Six Films 1963-1974 (18)

Robbe-Grillet wrote the screenplay for Alain Resnais's Last Year At Marienbad, one of the most famous (and famously baffling) films of the 1960s. In this sumptuously produced collection from the BFI he lays out some of the same themes though in more playfully (and erotic) form. Written before Marienbad but released a year after it in 1963, The Immortal One is like a dry run for that film. Set and shot in a mystical looking Istanbul, it's a dreamlike portrait of a relationship that isn't quite what it seems. Among the other five films are Trans-Europ Express and the lavishly kinky Successive Slidings Into Pleasure.

Y Gwyll (15)

There's a school of thought which says BBC Four viewers would have been more amenable to gloomy police drama Hinterland if the version made entirely in Welsh had been broadcast instead of the English-with-a-bit-of-Welsh one. For those people, here is the Welsh-only version. "Mwynhau eich hun!" as they say in Aberystwyth.